The capacitive touch screen is pasted with a dust strip, and the front cover of the touch screen is pasted with a dust strip for two purposes: 1.Some touch screens, such as PHILIPS front cover visual frame height is not enough, if you do not stick a dust strip into the touch screen will make the transducer is crushed, resulting in the touch screen can not be used, this phenomenon is particularly prominent on the flat display, stick a dust strip can cushion space for the transducer, so as to solve this problem.2. Prevent external dust from entering the striated area of the touch screen.If the dust accumulation on the touch screen stripe is too much, it will lead to the problem of slow response to touch, partial touch failure and so on.